谢谢大家!原文是这样的To a mixture of aldehyde 6 (1.5 g 7.5 mmol), diisopropylethylamine
(1.82 mL, 11.5 mmol) and a catalytic
amount of 4-dimethylaminopyridine in anhydrous
methylene chloride (25mL) at 0 C under an argon
atmosphere methoxymethyl chloride (1.8 mL) was
added slowly.